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Finding the Fourth Proportional to 89,118.99, 133,671.75 and 25,939.60

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Solution

The fourth proportional to 89,118.99, 133,671.75 and 25,939.60 is: 38,907.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,118.99 : 133,671.75 = 25,939.60 : x
  2. Step 2: Convert to fraction form
    89,118.99/133,671.75 = 25,939.60/x
  3. Step 3: Cross multiply
    89,118.99x = 133,671.75 × 25,939.60
  4. Step 4: Simplify right side
    89,118.99x = 3,467,391,726.30
  5. Step 5: Solve for x
    x = 3,467,391,726.30/89,118.99
  6. Step 6: Final answer
    x = 38,907.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.